In humans, low levels of serotonin make us feel:
a. Depression.
b. Impulsive.
c. Anxious.
d. All of the above.
D
Psychology
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Stress is equally likely to be generated by positive or negative events
Indicate whether this statement is true or false.
Psychology
When a researcher does not know the exact number of individuals in the population, it is necessary to use a nonprobability sampling method
a. True b. False Indicate whether the statement is true or false
Psychology